Which of the following is an example of a Class 3 lever?

A Class 3 lever is characterized by the position of the effort being applied between the fulcrum and the load. In this type of lever, the effort is applied closer to the fulcrum than the load, which results in a mechanical advantage that allows for greater speed or distance of movement but requires more effort to move the load.

Tweezers are a perfect example of a Class 3 lever. In tweezers, the fulcrum is located at the point where the two arms of the tweezers pivot. The effort is applied when you squeeze the handles together, which is situated between the fulcrum and the tips of the tweezers that grasp the object—this clearly shows the arrangement typical of a Class 3 lever. This design allows for fine control and manipulation of small objects with relatively less movement at the handles than the movement at the tips, characteristic of Class 3 levers.

In contrast, a seesaw represents a Class 1 lever, where the fulcrum is between the effort and the load. A wheelbarrow is an example of a Class 2 lever, where the load is between the effort and the fulcrum. Scissors incorporate two Class 1 levers working together